Abstract
El Hamra mooring pier was constructed on the northwestern Mediterranean coast of Egypt to provide shipping services for offshore oil terminals. Although the pier was built on cylindrical piles to avoid the interruption of sediment transport towards the south, unexpected sedimentation has affected navigation and the attached fire-fighting system. To provide a basis for evaluating the sedimentation problem and to provide possible mitigation strategies, a 23-month measurement program was conducted, including measurements of hydrographic surveying, nearshore waves, longshore currents, longshore littoral transport, currents seawards of the breaker zone, and offshore currents. The results confirm that carbonate sediments are transported southwards to the pier embayment from adjacent up-coast ridges by wave-induced currents. These sediments result from extensive civil engineering works (recreational development) up-coast of the El Hamra region, involving leveling of subaerial carbonate ridges and onshore sediment disposal.
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